Hi,

It is exam season, so to avoid work, I am experimenting with a
dustbuster.
I want to change a 7.2v to a 9.6v (the 7.2 batteries dont work) - I
have been using a model car NiCad pack and the suction is fantastic and
the motor still remains cool. The only problem is the battery pack get
very hot!
How can I prevent this? Ideas I had:
1) a resistor to limit current flow - loath to do this as it will
reduce motor speed
2) 2 9.6 packs in parellel to share the load between them and so keep
them cooler.
3) A different type of battery - NiMH/Lead acid

I know that buying anew one is easier, but it is the experimenting that
I want to do!

Thanks
squelch41